Brake-shoe head



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Patented June 16, 1925.

UNITED STATES PATENT OFFICE.

JOHN R. BARTHOLOMEW, OF BERKELEY, CALIFORNIA, ASSIGNOR TO THE WESTING-WILMERDING, PENNSYLVANIA, A CORPORATION HoUsE ATR BRAKE COMPANY, or

or PENNSYLVANIA.

BRAKE-SHOE HEAD.

Application led February 3, 1923.

To all whom t may concern:

Beit known that I, JOHN R. BARTHoLo- MEW, a citizen of the UnitedStates, residing at Berkeley, in the county of Alameda and State ofCalifornia, have invented new and useful Improvements in Brake-ShoeHeads, of which the following is a specilication.

This invention relates to brake shoe heads, and moreparticularly to abrake shoe head adapted for the internal expanding type of brake asemployed on moto-i` vehicles.

`The vprincipal object of my invention is to provide an improved brakeshoe head of the above character.

In the accompanying drawing; Fig. 1 is a side elevation of a brake shoehead embodying my invention; Fig. 2 an end view of the pivot end of thehead; Fig. 3 an end view of the cam end thereof; and Fig. 4 a section onthe line l-4C of Fig. l.

The brake shoe head may comprise a face section l havingan arcuate face2 to which the brake shoe 3 is adapted to be applied and having acentral integral web section l with bifurcated ends 5 and 6. The ends ofthe brake shoe head are tied together by means of an integralstrengthening rib 7.

Preferably cast in the web section 4 are pins 8 for receiving the hookedends of the release springs 9 and adjacent the ends of the arcuate shoereceiving Vface 2 of the brake head, bosses 10 are provided. Said bossesare tapped to receive studs ll and the brake .shoe 3 is provided with anapertured lug l2 at each end, adapted to be applied to the studs, sothat the shoe may be secured to the head by means of nuts 13 a plied tothe studs. By this construction the brake shoe may be removed withoutSerial N0. 616,848.

taking the wheel from the vehicle, since it 1s only necessaryto backofi" the stud nuts and then remove the shoe by a lateral movement in thedirection of the axis of the wheel. The usual pivot pin la is mounted inbearings provided in the bifurcated end section 6 and the other endsection 5 is provided with a nose portion` for engagement with a cam l5.

Bymeans of the above described construction, the metal of the head is sodisposed as to provide strength where most needed and at the same timethe weight of the brake shoe has been considerably reduced.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent, is:

l.. The combination with a brake shoe provided with a depending lug ateach end, of a brake head having an arcuate face for receiving said shoeand meansfor securing said lugs to said head and adapted to permit theremoval of the shoe by a lateral movement parallel to said face.

2. The combination with a brake shoe provided with a depending side lugat each end, of a brake head having an arcuate face for receiving saidshoe and screw threaded studs carried by said head for securing saidlugs to the brake head.

3. A brake shoe head comprising an` arcuate section for receiving abrake shoe, a web section integral therewith, a rib section connectingthe end portions of said web section, and a bifurcated portion atopposite ends ofthe head.

In testimony whereof I have hereunto set my hand.

JOHN R. BARTHOLOMEVV.

